SB20260720350 - NULL pointer dereference in Linux kernel amd amdkfd driver
Published: July 20, 2026
Security Bulletin ID
SB20260720350
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) NULL pointer dereference (CVE-ID: CVE-2026-63882)
CWE-ID: CWE-476 - NULL Pointer Dereference
CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to a null pointer dereference in svm_range_set_attr in the amdkfd SVM subsystem when handling a kfd_ioctl_svm call without a prior kfd_ioctl_acquire_vm call. A local user can invoke the affected ioctl sequence to cause a denial of service.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/2f9c3c161692f5bf1436e869a651bed10936e071
- https://git.kernel.org/stable/c/6495cc09f7e6c2af571b3e2e4640283b3792ebf2
- https://git.kernel.org/stable/c/c24eee21f9a943374fd64260a6e17dc3984e3d0e
- https://git.kernel.org/stable/c/d4e73a047d4ea866b75ee4b879d0d787dfa2704c
- https://git.kernel.org/stable/c/e4dcb5d6360319609bc5b05fb40e98b0af6bc674
- https://git.kernel.org/stable/c/e984d61d92e702096058f0f828f4b2b8563b88ce